package com.jt.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.jt.pojo.User;
import com.jt.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService{
    private static Map<Integer,String> columnMap=new HashMap<>();
    static {
        columnMap.put(1, "username");
        columnMap.put(2, "phone");
        columnMap.put(3, "email");
    }
    @Autowired
    private UserMapper userMapper;
    @Override
    public List<User> findAll(){

        return userMapper.selectList(null);
    }

    @Override
    public boolean checkUser(String param, Integer type) {
       // String column=type==1?"username":(type==2?"phone":"email");
        String column=columnMap.get(type);
        QueryWrapper queryWrapper=new QueryWrapper();
        queryWrapper.eq(column,param);
        int count=userMapper.selectCount(queryWrapper);
        //return count>0?true:false;
        return count>0;
    }
}
